/*******************************************************************************
* Copyright (c) 2012 BestSolution.at and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Tom Schindl<tom.schindl@bestsolution.at> - initial API and implementation
*******************************************************************************/
package at.bestsolution.efxclipse.runtime.workbench.renderers.base;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import org.eclipse.e4.core.services.events.IEventBroker;
import org.eclipse.e4.ui.model.application.ui.MUIElement;
import org.eclipse.e4.ui.model.application.ui.basic.MPartSashContainer;
import org.eclipse.e4.ui.model.application.ui.basic.MPartSashContainerElement;
import org.eclipse.e4.ui.workbench.UIEvents;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventHandler;
import at.bestsolution.efxclipse.runtime.workbench.base.rendering.RendererFactory;
import at.bestsolution.efxclipse.runtime.workbench.renderers.base.widget.WLayoutedWidget;
import at.bestsolution.efxclipse.runtime.workbench.renderers.base.widget.WSash;
@SuppressWarnings("restriction")
public abstract class BaseSashRenderer<N> extends BaseRenderer<MPartSashContainer, WSash<N>> {
@Inject
RendererFactory factory;
@PostConstruct
void init(IEventBroker eventBroker) {
eventBroker.subscribe(UIEvents.ElementContainer.TOPIC_CHILDREN, new EventHandler() {
@Override
public void handleEvent(Event event) {
Object changedObj = event.getProperty(UIEvents.EventTags.ELEMENT);
if (changedObj instanceof MPartSashContainer) {
MPartSashContainer parent = (MPartSashContainer) changedObj;
if (BaseSashRenderer.this == parent.getRenderer()) {
String eventType = (String) event.getProperty(UIEvents.EventTags.TYPE);
if (UIEvents.EventTypes.ADD.equals(eventType)) {
MUIElement element = (MUIElement) event.getProperty(UIEvents.EventTags.NEW_VALUE);
handleChildAddition(parent, (MPartSashContainerElement) element);
} else if (UIEvents.EventTypes.REMOVE.equals(eventType)) {
MUIElement element = (MUIElement) event.getProperty(UIEvents.EventTags.OLD_VALUE);
handleChildRemove(parent, (MPartSashContainerElement) element);
}
}
}
}
});
eventBroker.subscribe(UIEvents.ElementContainer.TOPIC_SELECTEDELEMENT, new EventHandler() {
@Override
public void handleEvent(Event event) {
Object changedObj = event.getProperty(UIEvents.EventTags.ELEMENT);
if (changedObj instanceof MPartSashContainer) {
MPartSashContainer parent = (MPartSashContainer) changedObj;
if (BaseSashRenderer.this == parent.getRenderer()) {
String eventType = (String) event.getProperty(UIEvents.EventTags.TYPE);
if (UIEvents.EventTypes.SET.equals(eventType)) {
MUIElement newValue = (MUIElement) event.getProperty(UIEvents.EventTags.NEW_VALUE);
MUIElement oldValue = (MUIElement) event.getProperty(UIEvents.EventTags.OLD_VALUE);
handleSelectedElement(parent, (MPartSashContainerElement) oldValue, (MPartSashContainerElement) newValue);
}
}
}
}
});
eventBroker.subscribe(UIEvents.UIElement.TOPIC_VISIBLE, new EventHandler() {
@Override
public void handleEvent(Event event) {
MUIElement changedObj = (MUIElement) event.getProperty(UIEvents.EventTags.ELEMENT);
if (changedObj.isToBeRendered()) {
MUIElement parent = changedObj.getParent();
if( parent != null ) {
if (BaseSashRenderer.this == parent.getRenderer()) {
MPartSashContainer stack = (MPartSashContainer) parent;
String eventType = (String) event.getProperty(UIEvents.EventTags.TYPE);
if (UIEvents.EventTypes.SET.equals(eventType)) {
Boolean newValue = (Boolean) event.getProperty(UIEvents.EventTags.NEW_VALUE);
if (newValue.booleanValue()) {
// TODO Is childRendered not dangerous to call
// here??
childRendered(stack, changedObj);
} else {
hideChild(stack, changedObj);
}
}
}
}
}
}
});
}
@Override
public void doProcessContent(MPartSashContainer element) {
WSash<N> sash = getWidget(element);
List<WLayoutedWidget<MPartSashContainerElement>> list = new ArrayList<WLayoutedWidget<MPartSashContainerElement>>();
for (MPartSashContainerElement e : element.getChildren()) {
WLayoutedWidget<MPartSashContainerElement> widget = engineCreateWidget(e);
if (widget != null) {
list.add(widget);
}
}
sash.addItems(list);
}
@Override
public void childRendered(MPartSashContainer parentElement, MUIElement element) {
if (inContentProcessing(parentElement)) {
return;
}
int idx = getRenderedIndex(parentElement, element);
WSash<N> sash = getWidget(parentElement);
@SuppressWarnings("unchecked")
List<WLayoutedWidget<MPartSashContainerElement>> l = Collections.singletonList((WLayoutedWidget<MPartSashContainerElement>) element.getWidget());
sash.addItems(idx, l);
}
@Override
public void hideChild(MPartSashContainer container, MUIElement changedObj) {
WSash<N> sash = getWidget(container);
if (sash == null) {
return;
}
@SuppressWarnings("unchecked")
WLayoutedWidget<MPartSashContainerElement> widget = (WLayoutedWidget<MPartSashContainerElement>) changedObj.getWidget();
if (widget != null) {
sash.removeItem(widget);
}
}
void handleChildAddition(MPartSashContainer parent, MPartSashContainerElement element) {
if (element.isToBeRendered() && element.isVisible()) {
if( element.getWidget() == null ) {
engineCreateWidget(element);
} else {
childRendered(parent, element);
}
}
}
void handleChildRemove(MPartSashContainer parent, MPartSashContainerElement element) {
if (element.isToBeRendered() && element.isVisible() && element.getWidget() != null) {
hideChild(parent, element);
}
}
void handleSelectedElement(MPartSashContainer parent, MPartSashContainerElement oldElement, MPartSashContainerElement newElement) {
// TODO Implement (is this needed the SWT renderes don't care about
// this!)
}
}